NEWS
Mapology
Thu Dec 13, 2012 03:34 PM CST

Compared to some farmers, Mark Johnson and his son Jeremy are rookies at field-mapping, having only been at it for about four years. But they are learning quickly.

The first couple of years, they mainly collected harvest data on their corn and soybeans near Clear Lake, Iowa. More recently, they layered hybrid and variety maps over their yield maps.

"[When planting] we'll switch hybrids halfway through a field," Mark Johnson says. "It's nice when you go to a field to harvest and it [their Ag ...

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